25271255880 has 256 divisors, whose sum is σ = 90992160000. Its totient is φ = 6201778176.

The previous prime is 25271255879. The next prime is 25271255917. The reversal of 25271255880 is 8855217252.

25271255880 is a `hidden beast` number, since 2 + 5 + 2 + 7 + 12 + 558 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4953571 + ... + 4958669.

It is an arithmetic number, because the mean of its divisors is an integer number (355438125).

Almost surely, 2^25271255880 is an apocalyptic number.

25271255880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25271255880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45496080000).

25271255880 is an abundant number, since it is smaller than the sum of its proper divisors (65720904120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25271255880 is a wasteful number, since it uses less digits than its factorization.

25271255880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5485 (or 5475 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 45.

The spelling of 25271255880 in words is "twenty-five billion, two hundred seventy-one million, two hundred fifty-five thousand, eight hundred eighty".